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How do I make a transparent canvas in html5?
...t also has to be 'cleared' and redrawn with every animation frame. Yes, it starts transparent by default, but how do you reset it to transparent and the start of every new animation frame?
– J Sprague
Oct 17 '15 at 4:14
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What is the relation between BLAS, LAPACK and ATLAS
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While ago, when I started doing some linear algebra in C, it came to me as a surprise to see there are so few tutorials for BLAS, LAPACK and other fundamental APIs, despite the fact that they are somehow the cornerstones of many other librarie...
How can I declare optional function parameters in Javascript? [duplicate]
...es to do a bunch of checks on optional inputs before the function actually starts.
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Using PHP with Socket.io
...NodeJS/Sockets to do its non-blocking thing.
Here is something to get you started: http://groups.google.com/group/socket_io/browse_thread/thread/74a76896d2b72ccc
Personally I have express running with an endpoint that is listening expressly for interaction from PHP.
For example, if I have sent a...
Generate full SQL script from EF 5 Code First Migrations
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This works to a point. Once you start changing column names it will start throwing errors, creating a DacPac is a better solution. Especially when you start using Pipelines in CI/CD
– Nick Turner
Jul 20 at 21:17
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What does “Memory allocated at compile time” really mean?
... which tells the program loader that after the array allocation at program start, the array should be filled with these values.
Here are two examples of the assembly generated by the compiler (GCC4.8.1 with x86 target):
C++ code:
int a[4];
int b[] = { 1 , 2 , 3 , 4 };
int main()
{}
Output asse...
Regular Expression to match only alphabetic characters
...gits and underscores from \w like this:
\A[^\W\d_]+\z
\A matches at the start of the string, \z at the end of the string (^ and $ also match at the start/end of lines in some languages like Ruby, or if certain regex options are set).
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Using crontab to execute script every minute and another every 24 hours [closed]
...ipt /var/www/html/a.php every minute. The execution on every minute must start at 00:00. The other task which must execute a script at 00:00 /var/www/html/reset.php (once every 24 hours).
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Converting a Date object to a calendar object [duplicate]
...g and unnecessary.
BTW, Java Naming conventions suggest that method names start with a lower case letter, so it should be: dateToCalendar or toCalendar (as shown).
OK, let's milk your code, shall we?
DateFormat formatter = new SimpleDateFormat("yyyyMMdd");
date = (Date)formatter.parse(date.toSt...
Invoking JavaScript code in an iframe from the parent page
... Not sure of the convention here. I have a follow up question. If I should start a new Question, I will. I have one problem. My page's iframe is populated dynamically. It contains a button whose onclick() event simply calls window.print(). This prints the content of the iframe perfectly. But when th...